74942542 has 4 divisors (see below), whose sum is σ = 112413816. Its totient is φ = 37471270.

The previous prime is 74942521. The next prime is 74942551. The reversal of 74942542 is 24524947.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18735634 + ... + 18735637.

It is an arithmetic number, because the mean of its divisors is an integer number (28103454).

Almost surely, 2^74942542 is an apocalyptic number.

74942542 is a deficient number, since it is larger than the sum of its proper divisors (37471274).

74942542 is a wasteful number, since it uses less digits than its factorization.

74942542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37471273.

The product of its digits is 80640, while the sum is 37.

The square root of 74942542 is about 8656.9360630653. The cubic root of 74942542 is about 421.6086119064.

It can be divided in two parts, 7494254 and 2, that added together give a triangular number (7494256 = T₃₈₇₁).

The spelling of 74942542 in words is "seventy-four million, nine hundred forty-two thousand, five hundred forty-two".